/*
 * Copyright 2012,2016 BitMover, Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "system.h"

int
readn(int from, void *buf, int size)
{
	int	done;
	int	n;

	for (done = 0; done < size; ) {
		n = read(from, (u8 *)buf + done, size - done);
		if (n <= 0) {
			break;
		}
		done += n;
	}
	return (done);
}

